Aktivmaterial für eine Sekundärbatterie mit nichtwässrigem Elektrolyten, Verfahren zur Herstellung des Aktivmaterials, Elektrode für eine Sekundärbatterie mit nichtwässrigem Elektrolyten und Sekundärbatterie mit nichtwässrigem Elektrolyten

Details

Veröffentlichungs-Nr.

EP2634148

Aktenzeichen

EP13156147

Anmeldetag

21. Februar 2013

Veröffentlichung

1. April 2015

Erteilung

1. April 2015

Rechtsraum

EP

IPC

H01M4/131H01M4/36H01M4/505H01M4/525C01G51/04C01G53/00// H01M10/052

Abstract

There is provided an active material for a nonaqueous electrolyte secondary battery, including a lithium-transition metal composite oxide which has an ±-NaFeO 2 -type crystal structure and of which the average composition is represented by the composition formula of Li 1+± Me 1-± O 2 (Me is a transition metal containing Co, Ni and Mn; and ± > 0), wherein the lithium-transition metal composite oxide is a particle having a core and a coated part, the cobalt concentration of the coated part is higher than the cobalt concentration of the core, the manganese concentration of the coated part is lower than the manganese concentration of the core, and the ratio of cobalt present in the coated part is 3 to 10% in terms of a molar ratio based on the amount of the transition metal present in the core.

Anmelder

Firma

GS Yuasa International Ltd.

Land

🇯🇵 Japan

Fachgebiete